Readme-CN.md

# 导读<a name="ZH-CN_TOPIC_0000001152533331"></a>

-   [系统类型](#section767218232110)
-   [文档导读](#section19810171681218)

为了方便开发者正确获取内容，本导读基于OpenHarmony学习路径同时结合开发者具体业务对相关资料资源进行了分类。

## 系统类型<a name="section767218232110"></a>

在正式学习OpenHarmony开发前，开发者需要先了解系统类型，方便后续根据自身业务匹配对应的系统及对应文档资源。

OpenHarmony是一款面向全场景的开源分布式操作系统，采用组件化设计，支持在128KiB到xGiB RAM资源的设备上运行系统组件，设备开发者可基于目标硬件能力自由选择系统组件进行集成。

为了保证在不同硬件上集成的易用性，OpenHarmony当前定义了三种基础系统类型，设备开发者通过选择基础系统类型完成必选组件集配置后，便可实现其最小系统的开发。这三种基础系统类型的参考定义如下：

-   轻量系统（mini system）

    面向MCU类处理器例如Arm Cortex-M、RISC-V 32位的设备，硬件资源极其有限，支持的设备最小内存为128KiB，可以提供多种轻量级网络协议，轻量级的图形框架，以及丰富的IOT总线读写部件等。可支撑的产品如智能家居领域的连接类模组、传感器设备、穿戴类设备等。

-   小型系统（small system）

    面向应用处理器例如Arm Cortex-A的设备，支持的设备最小内存为1MiB，可以提供更高的安全能力、标准的图形框架、视频编解码的多媒体能力。可支撑的产品如智能家居领域的IP Camera、电子猫眼、路由器以及智慧出行域的行车记录仪等。

-   标准系统（standard system）

    面向应用处理器例如Arm Cortex-A的设备，支持的设备最小内存为128MiB，可以提供增强的交互能力、3D GPU以及硬件合成能力、更多控件以及动效更丰富的图形能力、完整的应用框架。可支撑的产品如高端的冰箱显示屏。


OpenHarmony也提供了一系列可选的系统组件，方便设备开发者按需配置，以支撑其特色功能的扩展或定制开发。系统将这些可选的系统组件组合为一系列描述为特性或功能的系统能力，以方便设备开发者理解和选择。

## 文档导读<a name="section19810171681218"></a>

-   [轻量和小型系统开发指导](#table3762949121211)
-   [标准系统开发指导](#table17667535516)

**表 1**  轻量和小型系统开发指导（参考内存<128MB）

<a name="table3762949121211"></a>
<table><thead align="left"><tr id="row18762649161218"><th class="cellrowborder" valign="top" width="28.472847284728473%" id="mcps1.2.4.1.1"><p id="p1750131161313"><a name="p1750131161313"></a><a name="p1750131161313"></a>学习路径</p>
</th>
<th class="cellrowborder" valign="top" width="35.61356135613561%" id="mcps1.2.4.1.2"><p id="p8501411141319"><a name="p8501411141319"></a><a name="p8501411141319"></a>开发者业务</p>
</th>
<th class="cellrowborder" valign="top" width="35.91359135913591%" id="mcps1.2.4.1.3"><p id="p050181111314"><a name="p050181111314"></a><a name="p050181111314"></a>相关文档</p>
</th>
</tr>
</thead>
<tbody><tr id="row317979135310"><td class="cellrowborder" valign="top" width="28.472847284728473%" headers="mcps1.2.4.1.1 "><p id="p119871717125320"><a name="p119871717125320"></a><a name="p119871717125320"></a>了解<span id="text398721719533"><a name="text398721719533"></a><a name="text398721719533"></a>OpenHarmony</span></p>
</td>
<td class="cellrowborder" valign="top" width="35.61356135613561%" headers="mcps1.2.4.1.2 "><p id="p14987151715312"><a name="p14987151715312"></a><a name="p14987151715312"></a>整体认知<span id="text209871317105315"><a name="text209871317105315"></a><a name="text209871317105315"></a>OpenHarmony</span></p>
</td>
<td class="cellrowborder" valign="top" width="35.91359135913591%" headers="mcps1.2.4.1.3 "><a name="ul59871171533"></a><a name="ul59871171533"></a><ul id="ul59871171533"><li><a href="https://gitee.com/openharmony" target="_blank" rel="noopener noreferrer">OpenHarmony概述</a></li><li><a href="glossary/glossary.md">术语</a></li></ul>
</td>
</tr>
<tr id="row69521557115217"><td class="cellrowborder" valign="top" width="28.472847284728473%" headers="mcps1.2.4.1.1 "><p id="p69873174536"><a name="p69873174536"></a><a name="p69873174536"></a>获取开发资源</p>
</td>
<td class="cellrowborder" valign="top" width="35.61356135613561%" headers="mcps1.2.4.1.2 "><p id="p39871917185313"><a name="p39871917185313"></a><a name="p39871917185313"></a>准备开发前相关资源</p>
</td>
<td class="cellrowborder" valign="top" width="35.91359135913591%" headers="mcps1.2.4.1.3 "><a name="ul59871117135314"></a><a name="ul59871117135314"></a><ul id="ul59871117135314"><li><a href="get-code/sourcecode-acquire.md">获取源码</a></li><li><a href="get-code/gettools.md">获取工具</a></li></ul>
</td>
</tr>
<tr id="row11602937131510"><td class="cellrowborder" valign="top" width="28.472847284728473%" headers="mcps1.2.4.1.1 "><p id="p457713717150"><a name="p457713717150"></a><a name="p457713717150"></a>快速入门</p>
</td>
<td class="cellrowborder" valign="top" width="35.61356135613561%" headers="mcps1.2.4.1.2 "><p id="p55771237111517"><a name="p55771237111517"></a><a name="p55771237111517"></a>快速熟悉<span id="text15577123719154"><a name="text15577123719154"></a><a name="text15577123719154"></a>OpenHarmony</span>环境搭建、编译、烧录、调测、运行。</p>
</td>
<td class="cellrowborder" valign="top" width="35.91359135913591%" headers="mcps1.2.4.1.3 "><p id="p10832159115410"><a name="p10832159115410"></a><a name="p10832159115410"></a><a href="quick-start/quickstart-lite.md">轻量和小型系统快速入门</a></p>
</td>
</tr>
<tr id="row11602103701514"><td class="cellrowborder" valign="top" width="28.472847284728473%" headers="mcps1.2.4.1.1 "><p id="p16577163716159"><a name="p16577163716159"></a><a name="p16577163716159"></a>基础能力使用</p>
</td>
<td class="cellrowborder" valign="top" width="35.61356135613561%" headers="mcps1.2.4.1.2 "><p id="p857711379158"><a name="p857711379158"></a><a name="p857711379158"></a>使用<span id="text5577237181514"><a name="text5577237181514"></a><a name="text5577237181514"></a>OpenHarmony</span>提供的基础能力</p>
</td>
<td class="cellrowborder" valign="top" width="35.91359135913591%" headers="mcps1.2.4.1.3 "><a name="ul1577103716159"></a><a name="ul1577103716159"></a><ul id="ul1577103716159"><li><a href="kernel/kernel.md">内核开发指南</a></li><li><a href="driver/Readme-CN.md">驱动开发指南</a></li><li><a href="subsystems/Readme-CN.md">子系统开发指南</a></li><li><a href="security/safety-safeguide-security.md">安全指南</a></li><li><a href="security/safety-protection-privacyguide.md">隐私保护</a></li></ul>
</td>
</tr>
<tr id="row10602193719152"><td class="cellrowborder" valign="top" width="28.472847284728473%" headers="mcps1.2.4.1.1 "><p id="p857873713152"><a name="p857873713152"></a><a name="p857873713152"></a>进阶开发</p>
</td>
<td class="cellrowborder" valign="top" width="35.61356135613561%" headers="mcps1.2.4.1.2 "><p id="p155782037201518"><a name="p155782037201518"></a><a name="p155782037201518"></a>结合系统能力开发智能设备</p>
</td>
<td class="cellrowborder" valign="top" width="35.91359135913591%" headers="mcps1.2.4.1.3 "><a name="ul257883731519"></a><a name="ul257883731519"></a><ul id="ul257883731519"><li><a href="guide/device-wifi.md">WLAN连接类产品</a></li><li><a href="guide/device-iotcamera-control.md">无屏摄像头类产品</a></li><li><a href="guide/device-camera.md">带屏摄像头类产品</a></li></ul>
</td>
</tr>
<tr id="row360273716155"><td class="cellrowborder" valign="top" width="28.472847284728473%" headers="mcps1.2.4.1.1 "><p id="p12579163711513"><a name="p12579163711513"></a><a name="p12579163711513"></a>移植适配</p>
</td>
<td class="cellrowborder" valign="top" width="35.61356135613561%" headers="mcps1.2.4.1.2 "><a name="ul12579137121512"></a><a name="ul12579137121512"></a><ul id="ul12579137121512"><li>针对特定芯片做移植适配</li><li>对三方库进行移植适配</li></ul>
</td>
<td class="cellrowborder" valign="top" width="35.91359135913591%" headers="mcps1.2.4.1.3 "><a name="ul157903731520"></a><a name="ul157903731520"></a><ul id="ul157903731520"><li><a href="porting/transplant-minichip.md">轻量系统芯片移植指导</a></li><li><a href="porting/transplant-smallchip.md">小型系统芯片移植指导</a></li><li><a href="porting/transplant-thirdparty.md">三方库移植指导</a></li></ul>
</td>
</tr>
<tr id="row9601737181517"><td class="cellrowborder" valign="top" width="28.472847284728473%" headers="mcps1.2.4.1.1 "><p id="p25791037131519"><a name="p25791037131519"></a><a name="p25791037131519"></a>贡献组件</p>
</td>
<td class="cellrowborder" valign="top" width="35.61356135613561%" headers="mcps1.2.4.1.2 "><p id="p45798376158"><a name="p45798376158"></a><a name="p45798376158"></a>为<span id="text16579133741518"><a name="text16579133741518"></a><a name="text16579133741518"></a>OpenHarmony</span>贡献功能组件</p>
</td>
<td class="cellrowborder" valign="top" width="35.91359135913591%" headers="mcps1.2.4.1.3 "><a name="ul957919379156"></a><a name="ul957919379156"></a><ul id="ul957919379156"><li><a href="bundles/bundles-standard-rules.md">组件开发规范</a></li><li><a href="bundles/bundles-guide.md">组件开发指南</a></li><li><a href="bundles/bundles-demo.md">组件开发示例</a></li></ul>
</td>
</tr>
<tr id="row260193701512"><td class="cellrowborder" valign="top" width="28.472847284728473%" headers="mcps1.2.4.1.1 "><p id="p95794372155"><a name="p95794372155"></a><a name="p95794372155"></a>参考</p>
</td>
<td class="cellrowborder" valign="top" width="35.61356135613561%" headers="mcps1.2.4.1.2 "><p id="p458073721519"><a name="p458073721519"></a><a name="p458073721519"></a>开发参考</p>
</td>
<td class="cellrowborder" valign="top" width="35.91359135913591%" headers="mcps1.2.4.1.3 "><a name="ul175808372155"></a><a name="ul175808372155"></a><ul id="ul175808372155"><li><a href="https://device.harmonyos.com/cn/docs/develop/apiref/js-framework-file-0000000000611396" target="_blank" rel="noopener noreferrer">API参考</a></li></ul>
</td>
</tr>
</tbody>
</table>

**表 2**  标准系统开发指导（参考内存≥128MB）

<a name="table17667535516"></a>
<table><thead align="left"><tr id="row206665375119"><th class="cellrowborder" valign="top" width="27.872787278727873%" id="mcps1.2.4.1.1"><p id="p4661053145115"><a name="p4661053145115"></a><a name="p4661053145115"></a>学习路径</p>
</th>
<th class="cellrowborder" valign="top" width="36.053605360536054%" id="mcps1.2.4.1.2"><p id="p126685315112"><a name="p126685315112"></a><a name="p126685315112"></a>开发者业务</p>
</th>
<th class="cellrowborder" valign="top" width="36.07360736073608%" id="mcps1.2.4.1.3"><p id="p26695395112"><a name="p26695395112"></a><a name="p26695395112"></a>相关文档</p>
</th>
</tr>
</thead>
<tbody><tr id="row9662532514"><td class="cellrowborder" valign="top" width="27.872787278727873%" headers="mcps1.2.4.1.1 "><p id="p066105317513"><a name="p066105317513"></a><a name="p066105317513"></a>了解<span id="text1167105317518"><a name="text1167105317518"></a><a name="text1167105317518"></a>OpenHarmony</span></p>
</td>
<td class="cellrowborder" valign="top" width="36.053605360536054%" headers="mcps1.2.4.1.2 "><p id="p16673531512"><a name="p16673531512"></a><a name="p16673531512"></a>整体认知<span id="text196765319515"><a name="text196765319515"></a><a name="text196765319515"></a>OpenHarmony</span></p>
</td>
<td class="cellrowborder" valign="top" width="36.07360736073608%" headers="mcps1.2.4.1.3 "><a name="ul10673531517"></a><a name="ul10673531517"></a><ul id="ul10673531517"><li><a href="https://gitee.com/openharmony" target="_blank" rel="noopener noreferrer">OpenHarmony概述</a></li><li><a href="glossary/glossary.md">术语</a></li></ul>
</td>
</tr>
<tr id="row267155313513"><td class="cellrowborder" valign="top" width="27.872787278727873%" headers="mcps1.2.4.1.1 "><p id="p13671853205113"><a name="p13671853205113"></a><a name="p13671853205113"></a>获取开发资源</p>
</td>
<td class="cellrowborder" valign="top" width="36.053605360536054%" headers="mcps1.2.4.1.2 "><p id="p0671053115115"><a name="p0671053115115"></a><a name="p0671053115115"></a>准备开发前相关资源</p>
</td>
<td class="cellrowborder" valign="top" width="36.07360736073608%" headers="mcps1.2.4.1.3 "><a name="ul06732078273"></a><a name="ul06732078273"></a><ul id="ul06732078273"><li><a href="get-code/sourcecode-acquire.md">获取源码</a></li><li><a href="get-code/gettools.md">获取工具</a></li></ul>
</td>
</tr>
<tr id="row13671253165120"><td class="cellrowborder" valign="top" width="27.872787278727873%" headers="mcps1.2.4.1.1 "><p id="p166795345112"><a name="p166795345112"></a><a name="p166795345112"></a>快速入门</p>
</td>
<td class="cellrowborder" valign="top" width="36.053605360536054%" headers="mcps1.2.4.1.2 "><p id="p1167135345112"><a name="p1167135345112"></a><a name="p1167135345112"></a>快速熟悉<span id="text1567115355115"><a name="text1567115355115"></a><a name="text1567115355115"></a>OpenHarmony</span>环境搭建、编译、烧录、调测、运行。</p>
</td>
<td class="cellrowborder" valign="top" width="36.07360736073608%" headers="mcps1.2.4.1.3 "><p id="p1114162510521"><a name="p1114162510521"></a><a name="p1114162510521"></a><a href="quick-start/quickstart-standard.md">标准系统快速入门</a></p>
</td>
</tr>
<tr id="row1168155365119"><td class="cellrowborder" valign="top" width="27.872787278727873%" headers="mcps1.2.4.1.1 "><p id="p96810536514"><a name="p96810536514"></a><a name="p96810536514"></a>基础能力使用</p>
</td>
<td class="cellrowborder" valign="top" width="36.053605360536054%" headers="mcps1.2.4.1.2 "><p id="p136812535511"><a name="p136812535511"></a><a name="p136812535511"></a>使用<span id="text1068553195119"><a name="text1068553195119"></a><a name="text1068553195119"></a>OpenHarmony</span>提供的基础能力</p>
</td>
<td class="cellrowborder" valign="top" width="36.07360736073608%" headers="mcps1.2.4.1.3 "><a name="ul1954915235272"></a><a name="ul1954915235272"></a><ul id="ul1954915235272"><li><a href="kernel/kernel.md">内核开发指南</a></li><li><a href="driver/Readme-CN.md">驱动开发指南</a></li><li><a href="subsystems/Readme-CN.md">子系统开发指南</a></li><li><a href="security/safety-safeguide-security.md">安全指南</a></li><li><a href="security/safety-protection-privacyguide.md">隐私保护</a></li></ul>
</td>
</tr>
<tr id="row1368195345111"><td class="cellrowborder" valign="top" width="27.872787278727873%" headers="mcps1.2.4.1.1 "><p id="p16681853145115"><a name="p16681853145115"></a><a name="p16681853145115"></a>进阶开发</p>
</td>
<td class="cellrowborder" valign="top" width="36.053605360536054%" headers="mcps1.2.4.1.2 "><p id="p1568753135116"><a name="p1568753135116"></a><a name="p1568753135116"></a>结合系统能力开发智能设备</p>
</td>
<td class="cellrowborder" valign="top" width="36.07360736073608%" headers="mcps1.2.4.1.3 "><a name="ul136895314518"></a><a name="ul136895314518"></a><ul id="ul136895314518"><li><a href="guide/device-clock-guide.md">时钟应用开发示例</a></li><li><a href="guide/device-driver-demo.md">平台驱动开发示例</a></li><li><a href="guide/device-outerdriver-demo.md">外设驱动开发示例</a></li></ul>
</td>
</tr>
<tr id="row66915375119"><td class="cellrowborder" valign="top" width="27.872787278727873%" headers="mcps1.2.4.1.1 "><p id="p4696535512"><a name="p4696535512"></a><a name="p4696535512"></a>移植适配</p>
</td>
<td class="cellrowborder" valign="top" width="36.053605360536054%" headers="mcps1.2.4.1.2 "><p id="p185185615284"><a name="p185185615284"></a><a name="p185185615284"></a>对三方库进行移植适配</p>
</td>
<td class="cellrowborder" valign="top" width="36.07360736073608%" headers="mcps1.2.4.1.3 "><a name="ul14724164204819"></a><a name="ul14724164204819"></a><ul id="ul14724164204819"><li><a href="porting/transplant-thirdparty.md">三方库移植指导</a></li><li><a href="porting/standard-system-porting-guide.md">标准系统芯片移植指导</a></li></ul>
</td>
</tr>
<tr id="row869853125119"><td class="cellrowborder" valign="top" width="27.872787278727873%" headers="mcps1.2.4.1.1 "><p id="p3691530511"><a name="p3691530511"></a><a name="p3691530511"></a>贡献组件</p>
</td>
<td class="cellrowborder" valign="top" width="36.053605360536054%" headers="mcps1.2.4.1.2 "><p id="p1469115335113"><a name="p1469115335113"></a><a name="p1469115335113"></a>为<span id="text6691253155112"><a name="text6691253155112"></a><a name="text6691253155112"></a>OpenHarmony</span>贡献功能组件</p>
</td>
<td class="cellrowborder" valign="top" width="36.07360736073608%" headers="mcps1.2.4.1.3 "><a name="ul87045395116"></a><a name="ul87045395116"></a><ul id="ul87045395116"><li><a href="bundles/bundles-standard-rules.md">组件开发规范</a></li><li><a href="bundles/bundles-guide.md">组件开发指南</a></li><li><a href="bundles/bundles-demo.md">组件开发示例</a></li></ul>
</td>
</tr>
<tr id="row1170153125110"><td class="cellrowborder" valign="top" width="27.872787278727873%" headers="mcps1.2.4.1.1 "><p id="p16701253195118"><a name="p16701253195118"></a><a name="p16701253195118"></a>参考</p>
</td>
<td class="cellrowborder" valign="top" width="36.053605360536054%" headers="mcps1.2.4.1.2 "><p id="p670135335116"><a name="p670135335116"></a><a name="p670135335116"></a>开发参考</p>
</td>
<td class="cellrowborder" valign="top" width="36.07360736073608%" headers="mcps1.2.4.1.3 "><a name="ul177016538519"></a><a name="ul177016538519"></a><ul id="ul177016538519"><li><a href="https://device.harmonyos.com/cn/docs/develop/apiref/js-framework-file-0000000000611396" target="_blank" rel="noopener noreferrer">API参考</a></li></ul>
</td>
</tr>
</tbody>
</table>